ARRMA F/R Diff Set GP4 5mm 29mm Open Diff Case 80K 6S Big Rock Kraton EXB V6 RC Differential Set - ARA311199

The ARRMA ARA311199 front and rear differential set is a direct-fit replacement for the ARRMA Big Rock 6S, Kraton EXB, Kraton V6, and Notorious 6S, providing an open differential case loaded with 80K weight fluid and built around a 5mm input and 29mm case diameter. When a diff seal blows, oil leaks out, or internal components wear under repeated 6S bashing, this GP4 5mm 29mm open diff set gets the drivetrain back to factory spec without the need to source individual internals. It covers both the front and rear positions in a single kit, making it the practical choice when servicing both ends of the vehicle at the same time.

Key Features

• Covers both front and rear differential positions in one kit, reducing the need for multiple part orders
• 80K weight differential fluid delivers the open diff feel suited to high-speed bashing on these 6S platforms
• 29mm case diameter and 5mm input shaft dimensions match the original factory specification on compatible ARRMA 6S models
• Designed for the GP4 platform, ensuring direct fitment across Big Rock 6S, Kraton EXB, Kraton V6, and Notorious 6S
• Restores drivetrain performance to stock condition after fluid breakdown or case damage from hard running

What's Included

• 1x Front open differential assembly (5mm/29mm, 80K fluid, GP4 spec)
• 1x Rear open differential assembly (5mm/29mm, 80K fluid, GP4 spec)

What You Need

• Compatible ARRMA 6S vehicle to install into (Big Rock 6S, Kraton EXB, Kraton V6, or Notorious 6S)
• Basic RC tools for differential removal and installation (hex drivers, bearing press or similar)
• Replacement differential fluid if re-shimming or re-filling after installation is preferred